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Author Topic: pond goldfish  (Read 2704 times)
granny23
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pond goldfish
« on: August 27, 2009, 01:30:40 PM »

Can goldfish live in a small pond without some type of air filter?  We run our pond filter
about  ten hours a day.   Is that enough to give the goldfish air?   I also found out that
the temperature in the pond should be 60s  if it gets too hot like 80 and 90s  - the fish die. 
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SeaWitch
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Re: pond goldfish
« Reply #1 on: January 11, 2010, 05:53:41 PM »

I just wanted to reply to this, even though it is an old post.

Goldfish should never be kept in a pond without some type of filtration running 24/7.  Tropicals can be kept in a pond w/out filtration, but GF cannot survive without it.
I have a 150g stock tank that I use as a pond during the summer.  I run a Pondmaster 1500 filter on it all the time.  GF need filtration and water movement.  Ideally, the temperature should stay below 80 degrees, and using some sort of sun shade can achieve this, or use lots of pond plants for cover.
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Fleabie
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Re: pond goldfish
« Reply #2 on: March 25, 2010, 09:05:47 AM »

I've found that as long as the pond has a large surface area and isn't incredibly deep, and as long as there is water movement on the surface of the water, the fish will get enough oxygen. You could also put some aquatic plants in there to provide further oxygen and filtration.
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darren
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Re: pond goldfish
« Reply #3 on: August 15, 2010, 10:49:05 PM »

Pond goldfish.  Main few points to remember are.  Solubility of oxygen in water is only about 10ppm at best, if the oxygen level ever gets too low the goldfish will stop what they are doing and come up and gulp at the surface for oxygen. If you have a small air pump in the garage and run air tubing and an air stone in to the pond the fish will always be healthy swimming in well oxygenated water (they also like to play in the bubbles).  Goldfish love murky water, a filter is secondary to the air pump.  Once there is an air pump the stocking levels can go up.
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hailsontherocks
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Re: pond goldfish
« Reply #4 on: August 23, 2011, 07:25:57 PM »

Is it bad to have a pond in full sunlight? I am slowly building up my pond with plants etc, but our house is in one of those terible positions; the front gets full sunlight and the back gets no sunlight. I put them out the front and have a punga log running across the big one with a few plants to hide in. the pond has flax and rose bushes to one side of it.
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nabi
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Re: pond goldfish
« Reply #5 on: August 23, 2011, 09:20:35 PM »

Sometimes it avoidable, but adding some floating pond plants can help to shade the water and give the fish some protection from the sun and predators.
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hailsontherocks
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Re: pond goldfish
« Reply #6 on: August 24, 2011, 04:24:23 AM »

Predators are not a problem for me as the entire pond area is covered in black netting, about 7cm(2 and a bit inches) from the surface.

there are some spider flax succulents hanging into the pond also.
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Nossie
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Re: pond goldfish
« Reply #7 on: August 24, 2011, 02:33:37 PM »

If you have white fish, they could get a sunburn Wink But since you cover the top with some plants and whatnot, they should be okay!
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Fishy Jeff
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Re: pond goldfish
« Reply #8 on: August 31, 2011, 05:53:22 AM »

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Can goldfish live in a small pond without some type of air filter?  We run our pond filter
about  ten hours a day.   Is that enough to give the goldfish air?   I also found out that
the temperature in the pond should be 60s  if it gets too hot like 80 and 90s  - the fish die. 

I'm a noob, so take that in consideration in my answer.

Goldfish are hardy and tolerant of a wide range of conditions, particularly the common.

As far as oxygen,  this varies depending on temperature, surface area and time of day.

Cold water holds more oxygen than warm. So a warm pond (in the sun) needs more attention.

If you have algae (common in a sunny pond) or  a heavily planted pond then you have a day/night pond cycle. With the plants providing oxygen in the day and taking in oxygen at night. So the oxygen level in the pond falls throughout the night. If you are adding air, then it is most needed at night.

The filter won't add air, that is done in the spray. This is all about surface area. A pond with a large surface area per volume will have more oxygen diffusing in. Smaller spray droplets falling for a greater length of time will put in more air.

So, to get more O in the water, you either run a fountain or a waterfall, add air in the filter line by having an air tap next to a venturi (the lower pressure in the expansion sucks in air), or by pumping air to an air stone. Smaller micro bubbles are more efficient. You may wish to blow bubbles 24/7 or at least at night.

Myself, I'm trying for a more natural pond (or at least more artistic) rather than a perfect one, so I'll break a few rules.

Fishy Jeff
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